// Copyright 2024 Vadim Kharitonovich
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package server

import (
	"context"

	"notabug.org/overflowingd/lbs/pkg/log"
	"notabug.org/overflowingd/lbs/pkg/protocol/packet"
)

type Opt func(o *Options)

type WorkerPool struct {
	Max int
	Min int
}

type Options struct {
	Workers *WorkerPool
	Logger  log.Logger
}

func WithMinWorkers(v int) Opt {
	return func(o *Options) {
		o.Workers.Min = v
	}
}

func WithMaxWorkers(v int) Opt {
	return func(o *Options) {
		o.Workers.Max = v
	}
}

func WithLogger(l log.Logger) Opt {
	return func(o *Options) {
		o.Logger = l
	}
}

type Handler interface {
	Next(context.Context, *packet.Header[packet.RequestMessageCode]) *packet.Response
	Retain(context.Context, *packet.Request[*packet.Retention]) *packet.Response
}

type Server interface {
	Listen(ctx context.Context, addr string) error
}
